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<a name="1" href="#1">1</a>   <em>/**<em>*</em></em>
<a name="2" href="#2">2</a>   <em> * Copyright 2007 the original author or authors.</em>
<a name="3" href="#3">3</a>   <em> *</em>
<a name="4" href="#4">4</a>   <em> * Licensed under the Apache License, Version 2.0 (the "License");</em>
<a name="5" href="#5">5</a>   <em> * you may not use this file except in compliance with the License.</em>
<a name="6" href="#6">6</a>   <em> * You may obtain a copy of the License at</em>
<a name="7" href="#7">7</a>   <em> *</em>
<a name="8" href="#8">8</a>   <em> *         <a href="http://www.apache.org/licenses/LICENSE-2.0" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em>
<a name="9" href="#9">9</a>   <em> *</em>
<a name="10" href="#10">10</a>  <em> * For more information visit</em>
<a name="11" href="#11">11</a>  <em> *         <a href="http://72miles.com" target="alexandria_uri">http://72miles.com</a> and</em>
<a name="12" href="#12">12</a>  <em> *         <a href="http://architecturerules.googlecode.com/svn/docs/index.html" target="alexandria_uri">http://architecturerules.googlecode.com/svn/docs/index.html</a></em>
<a name="13" href="#13">13</a>  <em> */</em>
<a name="14" href="#14">14</a>  
<a name="15" href="#15">15</a>  <strong>package</strong> org.seventytwomiles.springframework.core.io;
<a name="16" href="#16">16</a>  
<a name="17" href="#17">17</a>  
<a name="18" href="#18">18</a>  <strong>import</strong> org.seventytwomiles.springframework.util.ClassUtils;
<a name="19" href="#19">19</a>  <strong>import</strong> org.seventytwomiles.springframework.util.ResourceUtils;
<a name="20" href="#20">20</a>  
<a name="21" href="#21">21</a>  <strong>import</strong> java.io.File;
<a name="22" href="#22">22</a>  <strong>import</strong> java.io.FileNotFoundException;
<a name="23" href="#23">23</a>  <strong>import</strong> java.io.IOException;
<a name="24" href="#24">24</a>  <strong>import</strong> java.io.InputStream;
<a name="25" href="#25">25</a>  <strong>import</strong> java.net.URL;
<a name="26" href="#26">26</a>  <strong>import</strong> java.util.*;
<a name="27" href="#27">27</a>  
<a name="28" href="#28">28</a>  
<a name="29" href="#29">29</a>  
<a name="30" href="#30">30</a>  <em>/**<em>*</em></em>
<a name="31" href="#31">31</a>  <em> * &lt;p>These classes are all extracted from the Spring Framework in order to</em>
<a name="32" href="#32">32</a>  <em> * remove the dependency on the Spring library.&lt;/p></em>
<a name="33" href="#33">33</a>  <em> *</em>
<a name="34" href="#34">34</a>  <em> * @author mikenereson</em>
<a name="35" href="#35">35</a>  <em> * @noinspection SimplifiableIfStatement</em>
<a name="36" href="#36">36</a>  <em> */</em>
<a name="37" href="#37">37</a>  <strong>public</strong> <strong>class</strong> <a href="../../../../../org/seventytwomiles/springframework/core/io/ClassPathResource.html">ClassPathResource</a> {
<a name="38" href="#38">38</a>  
<a name="39" href="#39">39</a>  
<a name="40" href="#40">40</a>      <em>/**<em>*</em></em>
<a name="41" href="#41">41</a>  <em>     * &lt;p>symbol that separates folders&lt;/p></em>
<a name="42" href="#42">42</a>  <em>     *</em>
<a name="43" href="#43">43</a>  <em>     * @parameter FOLDER_SEPARATOR String</em>
<a name="44" href="#44">44</a>  <em>     */</em>
<a name="45" href="#45">45</a>      <strong>private</strong> <strong>static</strong> <strong>final</strong> String FOLDER_SEPARATOR = <span class="string">"/"</span>;
<a name="46" href="#46">46</a>  
<a name="47" href="#47">47</a>      <em>/**<em>*</em></em>
<a name="48" href="#48">48</a>  <em>     * &lt;p>symbol that separates folders on the Windows platform&lt;/p></em>
<a name="49" href="#49">49</a>  <em>     *</em>
<a name="50" href="#50">50</a>  <em>     * @parameter WINDOWS_FOLDER_SEPARATOR String</em>
<a name="51" href="#51">51</a>  <em>     */</em>
<a name="52" href="#52">52</a>      <strong>private</strong> <strong>static</strong> <strong>final</strong> String WINDOWS_FOLDER_SEPARATOR = <span class="string">"&#47;&#47;"</span>;
<a name="53" href="#53">53</a>  
<a name="54" href="#54">54</a>      <em>/**<em>*</em></em>
<a name="55" href="#55">55</a>  <em>     * &lt;p>Parent directory path&lt;/p></em>
<a name="56" href="#56">56</a>  <em>     *</em>
<a name="57" href="#57">57</a>  <em>     * @parameter TOP_PATH String</em>
<a name="58" href="#58">58</a>  <em>     */</em>
<a name="59" href="#59">59</a>      <strong>private</strong> <strong>static</strong> <strong>final</strong> String TOP_PATH = <span class="string">".."</span>;
<a name="60" href="#60">60</a>  
<a name="61" href="#61">61</a>      <em>/**<em>*</em></em>
<a name="62" href="#62">62</a>  <em>     * &lt;p>Current path&lt;/p></em>
<a name="63" href="#63">63</a>  <em>     *</em>
<a name="64" href="#64">64</a>  <em>     * @parameter CURRENT_PATH String</em>
<a name="65" href="#65">65</a>  <em>     */</em>
<a name="66" href="#66">66</a>      <strong>private</strong> <strong>static</strong> <strong>final</strong> String CURRENT_PATH = <span class="string">"."</span>;
<a name="67" href="#67">67</a>  
<a name="68" href="#68">68</a>      <em>/**<em>*</em></em>
<a name="69" href="#69">69</a>  <em>     * &lt;p>the path that you are in&lt;/p></em>
<a name="70" href="#70">70</a>  <em>     *</em>
<a name="71" href="#71">71</a>  <em>     * @parameter path String</em>
<a name="72" href="#72">72</a>  <em>     */</em>
<a name="73" href="#73">73</a>      <strong>private</strong> <strong>final</strong> String path;
<a name="74" href="#74">74</a>  
<a name="75" href="#75">75</a>      <em>/**<em>*</em></em>
<a name="76" href="#76">76</a>  <em>     * &lt;p>instance of ClassLoader&lt;/p></em>
<a name="77" href="#77">77</a>  <em>     *</em>
<a name="78" href="#78">78</a>  <em>     * @parameter classLoader String</em>
<a name="79" href="#79">79</a>  <em>     */</em>
<a name="80" href="#80">80</a>      <strong>private</strong> ClassLoader classLoader;
<a name="81" href="#81">81</a>  
<a name="82" href="#82">82</a>      <em>/**<em>*</em></em>
<a name="83" href="#83">83</a>  <em>     * &lt;p>instance of Class&lt;/p></em>
<a name="84" href="#84">84</a>  <em>     *</em>
<a name="85" href="#85">85</a>  <em>     * @parameter clazz String</em>
<a name="86" href="#86">86</a>  <em>     */</em>
<a name="87" href="#87">87</a>      <strong>private</strong> Class clazz;
<a name="88" href="#88">88</a>  
<a name="89" href="#89">89</a>  
<a name="90" href="#90">90</a>      <em>/**<em>*</em></em>
<a name="91" href="#91">91</a>  <em>     * &lt;p>Create a new &lt;code>ClassPathResource&lt;/code> for ClassLoader usage. A</em>
<a name="92" href="#92">92</a>  <em>     * leading slash will be removed, as the ClassLoader resource access methods</em>
<a name="93" href="#93">93</a>  <em>     * will not accept it. The thread context class loader will be used for</em>
<a name="94" href="#94">94</a>  <em>     * loading the resource.&lt;/p></em>
<a name="95" href="#95">95</a>  <em>     *</em>
<a name="96" href="#96">96</a>  <em>     * @param path the absolute path within the class path</em>
<a name="97" href="#97">97</a>  <em>     * @see ClassLoader#getResourceAsStream(String)</em>
<a name="98" href="#98">98</a>  <em>     */</em>
<a name="99" href="#99">99</a>      <strong>public</strong> <a href="../../../../../org/seventytwomiles/springframework/core/io/ClassPathResource.html">ClassPathResource</a>(<strong>final</strong> String path) {
<a name="100" href="#100">100</a>         <strong>this</strong>(path, (ClassLoader) <strong>null</strong>);
<a name="101" href="#101">101</a>     }
<a name="102" href="#102">102</a> 
<a name="103" href="#103">103</a> 
<a name="104" href="#104">104</a>     <em>/**<em>*</em></em>
<a name="105" href="#105">105</a> <em>     * &lt;p>Create a new &lt;code>ClassPathResource&lt;/code> for ClassLoader usage. A</em>
<a name="106" href="#106">106</a> <em>     * leading slash will be removed, as the ClassLoader resource access methods</em>
<a name="107" href="#107">107</a> <em>     * will not accept it.&lt;/p></em>
<a name="108" href="#108">108</a> <em>     *</em>
<a name="109" href="#109">109</a> <em>     * @param path the absolute path within the classpath</em>
<a name="110" href="#110">110</a> <em>     * @param classLoader the class loader to load the resource with, or</em>
<a name="111" href="#111">111</a> <em>     * &lt;code>null&lt;/code> for the thread context class loader</em>
<a name="112" href="#112">112</a> <em>     * @see ClassLoader#getResourceAsStream(String)</em>
<a name="113" href="#113">113</a> <em>     */</em>
<a name="114" href="#114">114</a>     <strong>public</strong> <a href="../../../../../org/seventytwomiles/springframework/core/io/ClassPathResource.html">ClassPathResource</a>(String path, <strong>final</strong> ClassLoader classLoader) {
<a name="115" href="#115">115</a> 
<a name="116" href="#116">116</a>         <strong>if</strong> (<strong>null</strong> == path || <span class="string">""</span>.equals(path))
<a name="117" href="#117">117</a>             <strong>throw</strong> <strong>new</strong> IllegalArgumentException(<span class="string">"path can not be empty or null"</span>);
<a name="118" href="#118">118</a> 
<a name="119" href="#119">119</a>         <strong>if</strong> (path.startsWith(<span class="string">"/"</span>))
<a name="120" href="#120">120</a>             path = path.substring(1);
<a name="121" href="#121">121</a> 
<a name="122" href="#122">122</a>         <strong>this</strong>.path = cleanPath(path);
<a name="123" href="#123">123</a>         <strong>this</strong>.classLoader
<a name="124" href="#124">124</a>                 = (classLoader != <strong>null</strong> ? classLoader : ClassUtils.getDefaultClassLoader());
<a name="125" href="#125">125</a>     }
<a name="126" href="#126">126</a> 
<a name="127" href="#127">127</a> 
<a name="128" href="#128">128</a>     <em>/**<em>*</em></em>
<a name="129" href="#129">129</a> <em>     * &lt;p>Create a new &lt;code>ClassPathResource&lt;/code> for Class usage. The path</em>
<a name="130" href="#130">130</a> <em>     * can be relative to the given class, or absolute within the classpath via</em>
<a name="131" href="#131">131</a> <em>     * a leading slash.&lt;/p></em>
<a name="132" href="#132">132</a> <em>     *</em>
<a name="133" href="#133">133</a> <em>     * @param path relative or absolute path within the class path</em>
<a name="134" href="#134">134</a> <em>     * @param clazz the class to load resources with</em>
<a name="135" href="#135">135</a> <em>     * @see Class#getResourceAsStream</em>
<a name="136" href="#136">136</a> <em>     */</em>
<a name="137" href="#137">137</a>     <strong>public</strong> <a href="../../../../../org/seventytwomiles/springframework/core/io/ClassPathResource.html">ClassPathResource</a>(<strong>final</strong> String path, <strong>final</strong> Class clazz) {
<a name="138" href="#138">138</a> 
<a name="139" href="#139">139</a>         <strong>if</strong> (<strong>null</strong> == path || <span class="string">""</span>.equals(path))
<a name="140" href="#140">140</a>             <strong>throw</strong> <strong>new</strong> IllegalArgumentException(<span class="string">"path can not be empty or null"</span>);
<a name="141" href="#141">141</a> 
<a name="142" href="#142">142</a>         <strong>this</strong>.path = cleanPath(path);
<a name="143" href="#143">143</a>         <strong>this</strong>.clazz = clazz;
<a name="144" href="#144">144</a>     }
<a name="145" href="#145">145</a> 
<a name="146" href="#146">146</a> 
<a name="147" href="#147">147</a>     <em>/**<em>*</em></em>
<a name="148" href="#148">148</a> <em>     * &lt;p>Create a new &lt;code>ClassPathResource&lt;/code> with optional ClassLoader</em>
<a name="149" href="#149">149</a> <em>     * and Class. Only for internal usage.&lt;/p></em>
<a name="150" href="#150">150</a> <em>     *</em>
<a name="151" href="#151">151</a> <em>     * @param path relative or absolute path within the classpath</em>
<a name="152" href="#152">152</a> <em>     * @param classLoader the class loader to load the resource with, if any</em>
<a name="153" href="#153">153</a> <em>     * @param clazz the class to load resources with, if any</em>
<a name="154" href="#154">154</a> <em>     */</em>
<a name="155" href="#155">155</a>     <strong>protected</strong> <a href="../../../../../org/seventytwomiles/springframework/core/io/ClassPathResource.html">ClassPathResource</a>(<strong>final</strong> String path,
<a name="156" href="#156">156</a>                                 <strong>final</strong> ClassLoader classLoader,
<a name="157" href="#157">157</a>                                 <strong>final</strong> Class clazz) {
<a name="158" href="#158">158</a>         <strong>this</strong>.path = path;
<a name="159" href="#159">159</a>         <strong>this</strong>.classLoader = classLoader;
<a name="160" href="#160">160</a>         <strong>this</strong>.clazz = clazz;
<a name="161" href="#161">161</a>     }
<a name="162" href="#162">162</a> 
<a name="163" href="#163">163</a> 
<a name="164" href="#164">164</a>     <em>/**<em>*</em></em>
<a name="165" href="#165">165</a> <em>     * &lt;p>This implementation returns a description that includes the class path</em>
<a name="166" href="#166">166</a> <em>     * location.&lt;/p></em>
<a name="167" href="#167">167</a> <em>     *</em>
<a name="168" href="#168">168</a> <em>     * @return String description of File</em>
<a name="169" href="#169">169</a> <em>     */</em>
<a name="170" href="#170">170</a>     <strong>private</strong> String getDescription() {
<a name="171" href="#171">171</a>         <strong>return</strong> <span class="string">"class path resource ["</span> + <strong>this</strong>.path + <span class="string">"]"</span>;
<a name="172" href="#172">172</a>     }
<a name="173" href="#173">173</a> 
<a name="174" href="#174">174</a> 
<a name="175" href="#175">175</a>     <em>/**<em>*</em></em>
<a name="176" href="#176">176</a> <em>     * &lt;p>This implementation returns a File reference for the underlying class</em>
<a name="177" href="#177">177</a> <em>     * path resource, provided that it refers to a file in the file system.&lt;/p></em>
<a name="178" href="#178">178</a> <em>     *</em>
<a name="179" href="#179">179</a> <em>     * @return File</em>
<a name="180" href="#180">180</a> <em>     * @throws IOException when file not found</em>
<a name="181" href="#181">181</a> <em>     * @noinspection RedundantThrows</em>
<a name="182" href="#182">182</a> <em>     */</em>
<a name="183" href="#183">183</a>     <strong>public</strong> File getFile() throws IOException {
<a name="184" href="#184">184</a>         <strong>return</strong> ResourceUtils.getFile(getURL(), getDescription());
<a name="185" href="#185">185</a>     }
<a name="186" href="#186">186</a> 
<a name="187" href="#187">187</a> 
<a name="188" href="#188">188</a>     <em>/**<em>*</em></em>
<a name="189" href="#189">189</a> <em>     * &lt;p>This implementation returns a URL for the underlying class path</em>
<a name="190" href="#190">190</a> <em>     * resource.&lt;/p></em>
<a name="191" href="#191">191</a> <em>     *</em>
<a name="192" href="#192">192</a> <em>     * @return URL</em>
<a name="193" href="#193">193</a> <em>     * @throws FileNotFoundException when file not found</em>
<a name="194" href="#194">194</a> <em>     * @see ClassLoader#getResource(String)</em>
<a name="195" href="#195">195</a> <em>     * @see Class#getResource(String)</em>
<a name="196" href="#196">196</a> <em>     */</em>
<a name="197" href="#197">197</a>     <strong>private</strong> URL getURL() throws FileNotFoundException {
<a name="198" href="#198">198</a> 
<a name="199" href="#199">199</a>         <strong>final</strong> URL url = clazz != <strong>null</strong> ? clazz.getResource(
<a name="200" href="#200">200</a>                 path) : classLoader.getResource(path);
<a name="201" href="#201">201</a> 
<a name="202" href="#202">202</a>         <strong>if</strong> (url == <strong>null</strong>)
<a name="203" href="#203">203</a>             <strong>throw</strong> <strong>new</strong> FileNotFoundException(
<a name="204" href="#204">204</a>                     getDescription() + <span class="string">" cannot be resolved to URL because it does not exist"</span>);
<a name="205" href="#205">205</a> 
<a name="206" href="#206">206</a>         <strong>return</strong> url;
<a name="207" href="#207">207</a>     }
<a name="208" href="#208">208</a> 
<a name="209" href="#209">209</a> 
<a name="210" href="#210">210</a>     <em>/**<em>*</em></em>
<a name="211" href="#211">211</a> <em>     * &lt;p>This implementation compares the underlying class path locations.&lt;/p></em>
<a name="212" href="#212">212</a> <em>     */</em>
<a name="213" href="#213">213</a>     @Override
<a name="214" href="#214">214</a>     <strong>public</strong> <strong>boolean</strong> equals(<strong>final</strong> Object object) {
<a name="215" href="#215">215</a> 
<a name="216" href="#216">216</a>         <strong>if</strong> (object == <strong>this</strong>)
<a name="217" href="#217">217</a>             <strong>return</strong> <strong>true</strong>;
<a name="218" href="#218">218</a> 
<a name="219" href="#219">219</a>         <strong>if</strong> (!(object instanceof ClassPathResource))
<a name="220" href="#220">220</a>             <strong>return</strong> false;
<a name="221" href="#221">221</a> 
<a name="222" href="#222">222</a>         <strong>final</strong> <a href="../../../../../org/seventytwomiles/springframework/core/io/ClassPathResource.html">ClassPathResource</a> that = (ClassPathResource) object;
<a name="223" href="#223">223</a> 
<a name="224" href="#224">224</a>         <strong>return</strong> (<strong>this</strong>.path.equals(that.path) &amp;&amp;
<a name="225" href="#225">225</a>                 nullSafeEquals(<strong>this</strong>.classLoader, that.classLoader) &amp;&amp;
<a name="226" href="#226">226</a>                 nullSafeEquals(<strong>this</strong>.clazz, that.clazz));
<a name="227" href="#227">227</a>     }
<a name="228" href="#228">228</a> 
<a name="229" href="#229">229</a> 
<a name="230" href="#230">230</a>     <em>/**<em>*</em></em>
<a name="231" href="#231">231</a> <em>     * &lt;p>Determine if the given objects are equal, returning &lt;code>true&lt;/code></em>
<a name="232" href="#232">232</a> <em>     * if both are &lt;code>null&lt;/code> or &lt;code>false&lt;/code> if only one is</em>
<a name="233" href="#233">233</a> <em>     * &lt;code>null&lt;/code>. &lt;p>Compares arrays with &lt;code>Arrays.equals&lt;/code>,</em>
<a name="234" href="#234">234</a> <em>     * performing an equality check based on the array elements rather than the</em>
<a name="235" href="#235">235</a> <em>     * array reference.&lt;/p></em>
<a name="236" href="#236">236</a> <em>     *</em>
<a name="237" href="#237">237</a> <em>     * @param object1 first Object to compare</em>
<a name="238" href="#238">238</a> <em>     * @param object2 second Object to compare</em>
<a name="239" href="#239">239</a> <em>     * @return whether the given objects are equal</em>
<a name="240" href="#240">240</a> <em>     * @see java.util.Arrays#equals</em>
<a name="241" href="#241">241</a> <em>     */</em>
<a name="242" href="#242">242</a>     <strong>private</strong> <strong>boolean</strong> nullSafeEquals(<strong>final</strong> Object object1, <strong>final</strong> Object object2) {
<a name="243" href="#243">243</a> 
<a name="244" href="#244">244</a>         <strong>if</strong> (object1 == object2)
<a name="245" href="#245">245</a>             <strong>return</strong> <strong>true</strong>;
<a name="246" href="#246">246</a> 
<a name="247" href="#247">247</a>         <strong>if</strong> (object1 == <strong>null</strong> || object2 == <strong>null</strong>)
<a name="248" href="#248">248</a>             <strong>return</strong> false;
<a name="249" href="#249">249</a> 
<a name="250" href="#250">250</a>         <strong>if</strong> (object1.equals(object2))
<a name="251" href="#251">251</a>             <strong>return</strong> <strong>true</strong>;
<a name="252" href="#252">252</a> 
<a name="253" href="#253">253</a>         <strong>if</strong> (object1 instanceof Object[] &amp;&amp; object2 instanceof Object[])
<a name="254" href="#254">254</a>             <strong>return</strong> Arrays.equals((Object[]) object1, (Object[]) object2);
<a name="255" href="#255">255</a> 
<a name="256" href="#256">256</a>         <strong>if</strong> (object1 instanceof <strong>boolean</strong>[] &amp;&amp; object2 instanceof <strong>boolean</strong>[])
<a name="257" href="#257">257</a>             <strong>return</strong> Arrays.equals((<strong>boolean</strong>[]) object1, (<strong>boolean</strong>[]) object2);
<a name="258" href="#258">258</a> 
<a name="259" href="#259">259</a>         <strong>if</strong> (object1 instanceof byte[] &amp;&amp; object2 instanceof byte[])
<a name="260" href="#260">260</a>             <strong>return</strong> Arrays.equals((byte[]) object1, (byte[]) object2);
<a name="261" href="#261">261</a> 
<a name="262" href="#262">262</a>         <strong>if</strong> (object1 instanceof <strong>char</strong>[] &amp;&amp; object2 instanceof <strong>char</strong>[])
<a name="263" href="#263">263</a>             <strong>return</strong> Arrays.equals((<strong>char</strong>[]) object1, (<strong>char</strong>[]) object2);
<a name="264" href="#264">264</a> 
<a name="265" href="#265">265</a>         <strong>if</strong> (object1 instanceof <strong>double</strong>[] &amp;&amp; object2 instanceof <strong>double</strong>[])
<a name="266" href="#266">266</a>             <strong>return</strong> Arrays.equals((<strong>double</strong>[]) object1, (<strong>double</strong>[]) object2);
<a name="267" href="#267">267</a> 
<a name="268" href="#268">268</a>         <strong>if</strong> (object1 instanceof <strong>float</strong>[] &amp;&amp; object2 instanceof <strong>float</strong>[])
<a name="269" href="#269">269</a>             <strong>return</strong> Arrays.equals((<strong>float</strong>[]) object1, (<strong>float</strong>[]) object2);
<a name="270" href="#270">270</a> 
<a name="271" href="#271">271</a>         <strong>if</strong> (object1 instanceof <strong>int</strong>[] &amp;&amp; object2 instanceof <strong>int</strong>[])
<a name="272" href="#272">272</a>             <strong>return</strong> Arrays.equals((<strong>int</strong>[]) object1, (<strong>int</strong>[]) object2);
<a name="273" href="#273">273</a> 
<a name="274" href="#274">274</a>         <strong>if</strong> (object1 instanceof <strong>long</strong>[] &amp;&amp; object2 instanceof <strong>long</strong>[])
<a name="275" href="#275">275</a>             <strong>return</strong> Arrays.equals((<strong>long</strong>[]) object1, (<strong>long</strong>[]) object2);
<a name="276" href="#276">276</a> 
<a name="277" href="#277">277</a>         <strong>if</strong> (object1 instanceof <strong>short</strong>[] &amp;&amp; object2 instanceof <strong>short</strong>[])
<a name="278" href="#278">278</a>             <strong>return</strong> Arrays.equals((<strong>short</strong>[]) object1, (<strong>short</strong>[]) object2);
<a name="279" href="#279">279</a> 
<a name="280" href="#280">280</a>         <strong>return</strong> false;
<a name="281" href="#281">281</a>     }
<a name="282" href="#282">282</a> 
<a name="283" href="#283">283</a> 
<a name="284" href="#284">284</a>     <em>/**<em>*</em></em>
<a name="285" href="#285">285</a> <em>     * &lt;p>This implementation checks whether a File can be opened, falling back</em>
<a name="286" href="#286">286</a> <em>     * to whether an InputStream can be opened. This will cover both directories</em>
<a name="287" href="#287">287</a> <em>     * and content resources.&lt;/p></em>
<a name="288" href="#288">288</a> <em>     *</em>
<a name="289" href="#289">289</a> <em>     * @return boolean</em>
<a name="290" href="#290">290</a> <em>     */</em>
<a name="291" href="#291">291</a>     <strong>public</strong> <strong>boolean</strong> exists() {
<a name="292" href="#292">292</a> 
<a name="293" href="#293">293</a>         <em class="comment">// Try file existence: can we find the file in the file system?</em>
<a name="294" href="#294">294</a>         <strong>try</strong> {
<a name="295" href="#295">295</a> 
<a name="296" href="#296">296</a>             <strong>return</strong> getFile().exists();
<a name="297" href="#297">297</a> 
<a name="298" href="#298">298</a>         } <strong>catch</strong> (<strong>final</strong> IOException ex) {
<a name="299" href="#299">299</a> 
<a name="300" href="#300">300</a>             <em class="comment">// Fall back to stream existence: can we open the stream?</em>
<a name="301" href="#301">301</a>             <strong>try</strong> {
<a name="302" href="#302">302</a> 
<a name="303" href="#303">303</a>                 <strong>final</strong> InputStream inputStream = getInputStream();
<a name="304" href="#304">304</a>                 inputStream.close();
<a name="305" href="#305">305</a>                 <strong>return</strong> <strong>true</strong>;
<a name="306" href="#306">306</a> 
<a name="307" href="#307">307</a>             } <strong>catch</strong> (<strong>final</strong> Throwable throwable) {
<a name="308" href="#308">308</a> 
<a name="309" href="#309">309</a>                 <strong>return</strong> false;
<a name="310" href="#310">310</a>             }
<a name="311" href="#311">311</a>         }
<a name="312" href="#312">312</a>     }
<a name="313" href="#313">313</a> 
<a name="314" href="#314">314</a> 
<a name="315" href="#315">315</a>     <em>/**<em>*</em></em>
<a name="316" href="#316">316</a> <em>     * &lt;p>This implementation opens an InputStream for the given class path</em>
<a name="317" href="#317">317</a> <em>     * resource.&lt;/p></em>
<a name="318" href="#318">318</a> <em>     *</em>
<a name="319" href="#319">319</a> <em>     * @return InputStream</em>
<a name="320" href="#320">320</a> <em>     * @throws FileNotFoundException when file not found</em>
<a name="321" href="#321">321</a> <em>     * @see ClassLoader#getResourceAsStream(String)</em>
<a name="322" href="#322">322</a> <em>     * @see Class#getResourceAsStream(String)</em>
<a name="323" href="#323">323</a> <em>     */</em>
<a name="324" href="#324">324</a>     <strong>private</strong> InputStream getInputStream() throws FileNotFoundException {
<a name="325" href="#325">325</a> 
<a name="326" href="#326">326</a> 
<a name="327" href="#327">327</a>         <strong>final</strong> InputStream inputStream
<a name="328" href="#328">328</a>                 = clazz != <strong>null</strong> ? clazz.getResourceAsStream(
<a name="329" href="#329">329</a>                 path) : classLoader.getResourceAsStream(path);
<a name="330" href="#330">330</a> 
<a name="331" href="#331">331</a>         <strong>if</strong> (inputStream == <strong>null</strong>)
<a name="332" href="#332">332</a>             <strong>throw</strong> <strong>new</strong> FileNotFoundException(
<a name="333" href="#333">333</a>                     getDescription() + <span class="string">" cannot be opened because it does not exist"</span>);
<a name="334" href="#334">334</a> 
<a name="335" href="#335">335</a>         <strong>return</strong> inputStream;
<a name="336" href="#336">336</a>     }
<a name="337" href="#337">337</a> 
<a name="338" href="#338">338</a> 
<a name="339" href="#339">339</a>     <em>/**<em>*</em></em>
<a name="340" href="#340">340</a> <em>     * &lt;p>Normalize the path by suppressing sequences like "path/.." and inner</em>
<a name="341" href="#341">341</a> <em>     * simple dots. &lt;p>The result is convenient for path comparison. For other</em>
<a name="342" href="#342">342</a> <em>     * uses, notice that Windows separators ("\&quot;) are replaced by simple</em>
<a name="343" href="#343">343</a> <em>     * slashes.&lt;/p></em>
<a name="344" href="#344">344</a> <em>     *</em>
<a name="345" href="#345">345</a> <em>     * @param path the original path</em>
<a name="346" href="#346">346</a> <em>     * @return the normalized path</em>
<a name="347" href="#347">347</a> <em>     */</em>
<a name="348" href="#348">348</a>     <strong>private</strong> String cleanPath(<strong>final</strong> String path) {
<a name="349" href="#349">349</a> 
<a name="350" href="#350">350</a>         String pathToUse = replace(path, WINDOWS_FOLDER_SEPARATOR,
<a name="351" href="#351">351</a>                 FOLDER_SEPARATOR);
<a name="352" href="#352">352</a> 
<a name="353" href="#353">353</a>         <em class="comment">// Strip prefix from path to analyze, to not treat it as part of the</em>
<a name="354" href="#354">354</a>         <em class="comment">// first path element. This is necessary to correctly parse paths like</em>
<a name="355" href="#355">355</a>         <em class="comment">// "file:core/../core/io/Resource.class", where the ".." should just</em>
<a name="356" href="#356">356</a>         <em class="comment">// strip the first "core" directory while keeping the "file:" prefix.</em>
<a name="357" href="#357">357</a>         <strong>final</strong> <strong>int</strong> prefixIndex = pathToUse.indexOf(<span class="string">":"</span>);
<a name="358" href="#358">358</a>         String prefix = <span class="string">""</span>;
<a name="359" href="#359">359</a> 
<a name="360" href="#360">360</a>         <strong>if</strong> (prefixIndex != -1) {
<a name="361" href="#361">361</a> 
<a name="362" href="#362">362</a>             prefix = pathToUse.substring(0, prefixIndex + 1);
<a name="363" href="#363">363</a>             pathToUse = pathToUse.substring(prefixIndex + 1);
<a name="364" href="#364">364</a>         }
<a name="365" href="#365">365</a> 
<a name="366" href="#366">366</a>         <strong>final</strong> String[] pathArray = delimitedListToStringArray(pathToUse,
<a name="367" href="#367">367</a>                 FOLDER_SEPARATOR);
<a name="368" href="#368">368</a> 
<a name="369" href="#369">369</a>         <strong>final</strong> List pathElements = <strong>new</strong> LinkedList();
<a name="370" href="#370">370</a>         <strong>int</strong> tops = 0;
<a name="371" href="#371">371</a> 
<a name="372" href="#372">372</a>         <strong>for</strong> (<strong>int</strong> i = pathArray.length - 1; i >= 0; i--) {
<a name="373" href="#373">373</a> 
<a name="374" href="#374">374</a>             <strong>if</strong> (CURRENT_PATH.equals(pathArray[i])) {
<a name="375" href="#375">375</a> 
<a name="376" href="#376">376</a>                 <em class="comment">// Points to current directory - drop it.</em>
<a name="377" href="#377">377</a> 
<a name="378" href="#378">378</a>             } <strong>else</strong> <strong>if</strong> (TOP_PATH.equals(pathArray[i])) {
<a name="379" href="#379">379</a> 
<a name="380" href="#380">380</a>                 <em class="comment">// Registering top path found.</em>
<a name="381" href="#381">381</a>                 tops++;
<a name="382" href="#382">382</a> 
<a name="383" href="#383">383</a>             } <strong>else</strong> {
<a name="384" href="#384">384</a> 
<a name="385" href="#385">385</a>                 <strong>if</strong> (tops > 0) {
<a name="386" href="#386">386</a> 
<a name="387" href="#387">387</a>                     <em class="comment">// Merging path element with corresponding to top path.</em>
<a name="388" href="#388">388</a>                     tops--;
<a name="389" href="#389">389</a> 
<a name="390" href="#390">390</a>                 } <strong>else</strong> {
<a name="391" href="#391">391</a> 
<a name="392" href="#392">392</a>                     <em class="comment">// Normal path element found.</em>
<a name="393" href="#393">393</a>                     pathElements.add(0, pathArray[i]);
<a name="394" href="#394">394</a>                 }
<a name="395" href="#395">395</a>             }
<a name="396" href="#396">396</a>         }
<a name="397" href="#397">397</a> 
<a name="398" href="#398">398</a>         <em class="comment">// Remaining top paths need to be retained.</em>
<a name="399" href="#399">399</a>         <strong>for</strong> (<strong>int</strong> i = 0; i &lt; tops; i++)
<a name="400" href="#400">400</a>             pathElements.add(0, TOP_PATH);
<a name="401" href="#401">401</a> 
<a name="402" href="#402">402</a>         <strong>return</strong> prefix + collectionToDelimitedString(pathElements,
<a name="403" href="#403">403</a>                 FOLDER_SEPARATOR);
<a name="404" href="#404">404</a>     }
<a name="405" href="#405">405</a> 
<a name="406" href="#406">406</a> 
<a name="407" href="#407">407</a>     <em>/**<em>*</em></em>
<a name="408" href="#408">408</a> <em>     * &lt;p>Replace all occurrences of a substring within a string with another</em>
<a name="409" href="#409">409</a> <em>     * string.&lt;/p></em>
<a name="410" href="#410">410</a> <em>     *</em>
<a name="411" href="#411">411</a> <em>     * @param inString String to examine</em>
<a name="412" href="#412">412</a> <em>     * @param oldPattern String to replace</em>
<a name="413" href="#413">413</a> <em>     * @param newPattern String to insert</em>
<a name="414" href="#414">414</a> <em>     * @return a String with the replacements</em>
<a name="415" href="#415">415</a> <em>     */</em>
<a name="416" href="#416">416</a>     <strong>private</strong> <strong>static</strong> String replace(<strong>final</strong> String inString,
<a name="417" href="#417">417</a>                                   <strong>final</strong> String oldPattern,
<a name="418" href="#418">418</a>                                   <strong>final</strong> String newPattern) {
<a name="419" href="#419">419</a> 
<a name="420" href="#420">420</a>         <strong>if</strong> (inString == <strong>null</strong>)
<a name="421" href="#421">421</a>             <strong>return</strong> <strong>null</strong>;
<a name="422" href="#422">422</a> 
<a name="423" href="#423">423</a>         <strong>if</strong> (oldPattern == <strong>null</strong> || newPattern == <strong>null</strong>)
<a name="424" href="#424">424</a>             <strong>return</strong> inString;
<a name="425" href="#425">425</a> 
<a name="426" href="#426">426</a>         <strong>final</strong> StringBuffer stringBuffer = <strong>new</strong> StringBuffer();
<a name="427" href="#427">427</a> 
<a name="428" href="#428">428</a>         <em class="comment">// output StringBuffer we'll build up</em>
<a name="429" href="#429">429</a>         <strong>int</strong> position = 0; <em class="comment">// our position in the old string</em>
<a name="430" href="#430">430</a>         <strong>int</strong> index = inString.indexOf(oldPattern);
<a name="431" href="#431">431</a> 
<a name="432" href="#432">432</a>         <em class="comment">// the index of an occurrence we've found, or -1</em>
<a name="433" href="#433">433</a>         <strong>final</strong> <strong>int</strong> patternLength = oldPattern.length();
<a name="434" href="#434">434</a> 
<a name="435" href="#435">435</a>         <strong>while</strong> (index >= 0) {
<a name="436" href="#436">436</a> 
<a name="437" href="#437">437</a>             stringBuffer.append(inString.substring(position, index));
<a name="438" href="#438">438</a>             stringBuffer.append(newPattern);
<a name="439" href="#439">439</a>             position = index + patternLength;
<a name="440" href="#440">440</a>             index = inString.indexOf(oldPattern, position);
<a name="441" href="#441">441</a>         }
<a name="442" href="#442">442</a> 
<a name="443" href="#443">443</a>         stringBuffer.append(inString.substring(position));
<a name="444" href="#444">444</a> 
<a name="445" href="#445">445</a>         <em class="comment">// remember to append any characters to the right of a matches</em>
<a name="446" href="#446">446</a>         <strong>return</strong> stringBuffer.toString();
<a name="447" href="#447">447</a>     }
<a name="448" href="#448">448</a> 
<a name="449" href="#449">449</a> 
<a name="450" href="#450">450</a>     <em>/**<em>*</em></em>
<a name="451" href="#451">451</a> <em>     * &lt;p>Convenience method to return a Collection as a delimited (e.g. CSV)</em>
<a name="452" href="#452">452</a> <em>     * String. E.g. useful for &lt;code>toString()&lt;/code> implementations.&lt;/p></em>
<a name="453" href="#453">453</a> <em>     *</em>
<a name="454" href="#454">454</a> <em>     * @param collection the Collection to display</em>
<a name="455" href="#455">455</a> <em>     * @param deliminator the delimiter to use (probably a ",")</em>
<a name="456" href="#456">456</a> <em>     * @param prefix the String to start each element with</em>
<a name="457" href="#457">457</a> <em>     * @param suffix the String to end each element with</em>
<a name="458" href="#458">458</a> <em>     * @return String</em>
<a name="459" href="#459">459</a> <em>     */</em>
<a name="460" href="#460">460</a>     <strong>private</strong> <strong>static</strong> String collectionToDelimitedString(
<a name="461" href="#461">461</a>             <strong>final</strong> Collection collection, <strong>final</strong> String deliminator,
<a name="462" href="#462">462</a>             <strong>final</strong> String prefix, <strong>final</strong> String suffix) {
<a name="463" href="#463">463</a> 
<a name="464" href="#464">464</a>         <strong>if</strong> (collection.isEmpty())
<a name="465" href="#465">465</a>             <strong>return</strong> <span class="string">""</span>;
<a name="466" href="#466">466</a> 
<a name="467" href="#467">467</a>         <strong>final</strong> StringBuffer stringBuffer = <strong>new</strong> StringBuffer();
<a name="468" href="#468">468</a>         <strong>final</strong> Iterator iterator = collection.iterator();
<a name="469" href="#469">469</a> 
<a name="470" href="#470">470</a>         <strong>while</strong> (iterator.hasNext()) {
<a name="471" href="#471">471</a>             stringBuffer.append(prefix).append(iterator.next()).append(suffix);
<a name="472" href="#472">472</a> 
<a name="473" href="#473">473</a>             <strong>if</strong> (iterator.hasNext())
<a name="474" href="#474">474</a>                 stringBuffer.append(deliminator);
<a name="475" href="#475">475</a>         }
<a name="476" href="#476">476</a> 
<a name="477" href="#477">477</a>         <strong>return</strong> stringBuffer.toString();
<a name="478" href="#478">478</a>     }
<a name="479" href="#479">479</a> 
<a name="480" href="#480">480</a> 
<a name="481" href="#481">481</a>     <em>/**<em>*</em></em>
<a name="482" href="#482">482</a> <em>     * &lt;p>Convenience method to return a Collection as a delimited (e.g. CSV)</em>
<a name="483" href="#483">483</a> <em>     * String. E.g. useful for &lt;code>toString()&lt;/code> implementations.&lt;/p></em>
<a name="484" href="#484">484</a> <em>     *</em>
<a name="485" href="#485">485</a> <em>     * @param collection the Collection to display</em>
<a name="486" href="#486">486</a> <em>     * @param deliminator the delimiter to use (probably a ",")</em>
<a name="487" href="#487">487</a> <em>     * @return String</em>
<a name="488" href="#488">488</a> <em>     */</em>
<a name="489" href="#489">489</a>     <strong>private</strong> String collectionToDelimitedString(<strong>final</strong> Collection collection,
<a name="490" href="#490">490</a>                                                <strong>final</strong> String deliminator) {
<a name="491" href="#491">491</a>         <strong>return</strong> collectionToDelimitedString(collection, deliminator, <span class="string">""</span>, <span class="string">""</span>);
<a name="492" href="#492">492</a>     }
<a name="493" href="#493">493</a> 
<a name="494" href="#494">494</a> 
<a name="495" href="#495">495</a>     <em>/**<em>*</em></em>
<a name="496" href="#496">496</a> <em>     * Take a String which is a delimited list and convert it to a String array.</em>
<a name="497" href="#497">497</a> <em>     * &lt;p>A single delimiter can consists of more than one character: It will</em>
<a name="498" href="#498">498</a> <em>     * still be considered as single delimiter string, rather than as bunch of</em>
<a name="499" href="#499">499</a> <em>     * potential delimiter characters - in contrast to &lt;code>tokenizeToStringArray&lt;/code>.</em>
<a name="500" href="#500">500</a> <em>     *</em>
<a name="501" href="#501">501</a> <em>     * @param string the input String</em>
<a name="502" href="#502">502</a> <em>     * @param delimiter the delimiter between elements (this is a single</em>
<a name="503" href="#503">503</a> <em>     * delimiter, rather than a bunch individual delimiter characters)</em>
<a name="504" href="#504">504</a> <em>     * @return an array of the tokens in the list</em>
<a name="505" href="#505">505</a> <em>     */</em>
<a name="506" href="#506">506</a>     <strong>private</strong> <strong>static</strong> String[] delimitedListToStringArray(<strong>final</strong> String string,
<a name="507" href="#507">507</a>                                                        <strong>final</strong> String delimiter) {
<a name="508" href="#508">508</a> 
<a name="509" href="#509">509</a>         <strong>if</strong> (string == <strong>null</strong>)
<a name="510" href="#510">510</a>             <strong>return</strong> <strong>new</strong> String[0];
<a name="511" href="#511">511</a> 
<a name="512" href="#512">512</a>         <strong>if</strong> (delimiter == <strong>null</strong>)
<a name="513" href="#513">513</a>             <strong>return</strong> <strong>new</strong> String[]{string};
<a name="514" href="#514">514</a> 
<a name="515" href="#515">515</a>         <strong>final</strong> List result = <strong>new</strong> ArrayList();
<a name="516" href="#516">516</a> 
<a name="517" href="#517">517</a>         <strong>if</strong> (<span class="string">""</span>.equals(delimiter)) {
<a name="518" href="#518">518</a> 
<a name="519" href="#519">519</a>             <strong>for</strong> (<strong>int</strong> i = 0; i &lt; string.length(); i++)
<a name="520" href="#520">520</a>                 result.add(string.substring(i, i + 1));
<a name="521" href="#521">521</a> 
<a name="522" href="#522">522</a>         } <strong>else</strong> {
<a name="523" href="#523">523</a> 
<a name="524" href="#524">524</a>             <strong>int</strong> position = 0;
<a name="525" href="#525">525</a>             <strong>int</strong> deletePosition;
<a name="526" href="#526">526</a> 
<a name="527" href="#527">527</a>             <strong>while</strong> ((deletePosition = string.indexOf(delimiter,
<a name="528" href="#528">528</a>                     position)) != -1) {
<a name="529" href="#529">529</a> 
<a name="530" href="#530">530</a>                 result.add(string.substring(position, deletePosition));
<a name="531" href="#531">531</a>                 position = deletePosition + delimiter.length();
<a name="532" href="#532">532</a>             }
<a name="533" href="#533">533</a> 
<a name="534" href="#534">534</a>             <em class="comment">// Add rest of String, but not in case of empty input.</em>
<a name="535" href="#535">535</a>             <strong>if</strong> (string.length() > 0 &amp;&amp; position &lt;= string.length())
<a name="536" href="#536">536</a>                 result.add(string.substring(position));
<a name="537" href="#537">537</a>         }
<a name="538" href="#538">538</a> 
<a name="539" href="#539">539</a>         <strong>return</strong> toStringArray(result);
<a name="540" href="#540">540</a>     }
<a name="541" href="#541">541</a> 
<a name="542" href="#542">542</a> 
<a name="543" href="#543">543</a>     <em>/**<em>*</em></em>
<a name="544" href="#544">544</a> <em>     * &lt;p>Copy the given Collection into a String array. The Collection must</em>
<a name="545" href="#545">545</a> <em>     * contain String elements only.&lt;/p></em>
<a name="546" href="#546">546</a> <em>     *</em>
<a name="547" href="#547">547</a> <em>     * @param collection the Collection to copy</em>
<a name="548" href="#548">548</a> <em>     * @return the String array (&lt;code>null&lt;/code> if the passed-in Collection</em>
<a name="549" href="#549">549</a> <em>     *         was &lt;code>null&lt;/code>)</em>
<a name="550" href="#550">550</a> <em>     */</em>
<a name="551" href="#551">551</a>     <strong>private</strong> <strong>static</strong> String[] toStringArray(<strong>final</strong> Collection collection) {
<a name="552" href="#552">552</a> 
<a name="553" href="#553">553</a>         <strong>if</strong> (collection == <strong>null</strong>)
<a name="554" href="#554">554</a>             <strong>return</strong> <strong>null</strong>;
<a name="555" href="#555">555</a> 
<a name="556" href="#556">556</a>         <strong>return</strong> (String[]) collection.toArray(<strong>new</strong> String[collection.size()]);
<a name="557" href="#557">557</a>     }
<a name="558" href="#558">558</a> 
<a name="559" href="#559">559</a> }
</pre>
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